package com.atguigu.rabbitmq.eight;

import com.atguigu.rabbitmq.utils.RabbitMqUtils;
import com.rabbitmq.client.BuiltinExchangeType;
import com.rabbitmq.client.Channel;

import java.nio.charset.StandardCharsets;
import java.util.HashMap;
import java.util.Map;

/**
 * ClassName: Consumer01
 * Description: 死信队列 实战
 * 消费者1
 * Date: 2023/04/28 PM 3:57:30
 * <p>
 * project: atguigu-rabbitmq
 * package: com.atguigu.rabbitmq.eight
 * email: 1085844536@qq.com
 * version:
 *
 * @author WangGuojian
 */
public class Consumer01 {

    /**
     * 普通交换机的名称
     */
    public static final String NORMAL_EXCHANGE = "normal_exchange";

    /**
     * 死信交换机的名称
     */
    public static final String DEAD_EXCHANGE = "dead_exchange";

    /**
     * 普通队列的名称
     */
    public static final String NORMAL_QUEUE = "normal_queue";

    /**
     * 死信队列的名称
     */
    public static final String DEAD_QUEUE = "dead_queue";

    public static void main(String[] args) throws Exception {
        Channel channel = RabbitMqUtils.getChannel();
        // 声明死信和普通交换机类型为 direct
        channel.exchangeDeclare(NORMAL_EXCHANGE, BuiltinExchangeType.DIRECT);
        channel.exchangeDeclare(DEAD_EXCHANGE, BuiltinExchangeType.TOPIC);
        // 声明普通队列
        Map<String, Object> arguments = new HashMap<>(3);
        // 过期时间 10s=10000
        // arguments.put("x-message-ttl", 10000);
        // 正常队列设置死信交换机
        arguments.put("x-dead-letter-exchange", DEAD_EXCHANGE);
        // 设置死信 RoutingKey
        arguments.put("x-dead-letter-routing-key", "lisi");
        // 设置正常队列的长度的限制
        // arguments.put("x-max-length", 6);

        channel.queueDeclare(NORMAL_QUEUE, false, false, false, arguments);
        ///////////////////////////////////////////////
        // 声明死信队列
        channel.queueDeclare(DEAD_QUEUE, false, false, false, null);

        // 绑定普通的交换机与普通的队列
        channel.queueBind(NORMAL_QUEUE, NORMAL_EXCHANGE, "zhangsan");
        // 绑定死信的交换机与死信的队列
        channel.queueBind(DEAD_QUEUE, DEAD_EXCHANGE, "lisi");
        System.out.println("等待接收消息......");

        // 开启手动应答
        channel.basicConsume(NORMAL_QUEUE, false, (consumerTag, message) -> {
            String msg = new String(message.getBody(), StandardCharsets.UTF_8);
            if ("info5".equals(msg)) {
                System.out.println("Consumer01接收的消息是：" + msg + ": 此消息是被C1拒绝的");
                channel.basicReject(message.getEnvelope().getDeliveryTag(), false);
            } else {
                System.out.println("Consumer01接收的消息是：" + msg);
                channel.basicAck(message.getEnvelope().getDeliveryTag(), false);
            }
        }, consumerTag -> {
        });
    }

}
